ZyXEL Communications 2602HWNLI-D7A manual ∙ GetNext, ∙ Set, ∙ Trap

Prestige 2602HWNLI-D7A Support Notes

2. SNMPv1 Operations

SNMP itself is a simple request/response protocol. 4 SNMPv1 operations are defined as below.

∙Get

Allows the NMS to retrieve an object variable from the agent.

∙GetNext

Allows the NMS to retrieve the next object variable from a table or list within an agent. In SNMPv1, when a NMS wants to retrieve all elements of a table from an agent, it initiates a Get operation, followed by a series of GetNext operations.

∙Set

Allows the NMS to set values for object variables within an agent.

∙Trap

Used by the agent to inform the NMS of some events.

The SNMPv1 messages contains two part. The first part contains a version and a community name. The second part contains the actual SNMP protocol data unit (PDU) specifying the operation to be performed (Get, Set, and

68

All contents copyright (c) 2007 ZyXEL Communications Corporation.